The Western WDH2Q40000N 4TB External Hard Drive are Formatted for Mac® - Compatible with Apple’s Time Machine™. Includes software and instructions for reformatting to Windows®. The 4 TB version works with Windows® Vista and Windows® 7 only. Windows XP does not support hard drives above with capacities above 2 TB.

Cooler, quieter, eco-friendlier - Designed to use only WD hard drives with GreenPower Technology™, this system uses about 30% less energy* than standard systems and runs quietly because it doesn’t need a fan.
(* Based on comparison between a 1 TB dual-drive system using 7200 RPM drives and a 1 TB dual-drive system using WD hard drives with GreenPower Technology™.)

The speed you need - Lightning-fast FireWire® 800 combined with RAID 0 (Striped) yields the speed you need for smooth video editing, rendering complex 3D objects or special effects and saving huge blocks of data in record time.

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